package com.example.lotterysystem.common.util;

import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.json.JsonParseException;

import java.util.List;
import java.util.concurrent.Callable;

public class JacksonUtil {
    private JacksonUtil(){

    }

    private final static ObjectMapper OBJECT_MAPPER;
    static{
        OBJECT_MAPPER=new ObjectMapper();
    }

    private static ObjectMapper getObjectMapper(){
        return OBJECT_MAPPER;
    }
    private static <T> T tryParse(Callable<T> parser) {
        return tryParse(parser, JacksonException.class);
    }


    private static <T> T tryParse(Callable<T> parser, Class<? extends Exception> check) {
        try {
            return parser.call();
        } catch (Exception var4) {
            if (check.isAssignableFrom(var4.getClass())) {
                throw new JsonParseException(var4);
            }
                throw new IllegalStateException(var4);

        }
    }


//    序列化
    public static String writeValueAsString(Object object){
        return JacksonUtil.tryParse(()->{
            return JacksonUtil.getObjectMapper().writeValueAsString(object);
        });
    }
//    反序列化
    public  static<T> T readValue(String content,Class<T> valuetype){
        return JacksonUtil.tryParse(()->{
           return JacksonUtil.getObjectMapper().readValue(content,valuetype);
        });
    }
//    反序列化list
    public static<T> T readListValue(String content,Class<?> paramClass){
        JavaType javaType=JacksonUtil.getObjectMapper().getTypeFactory()
                .constructParametricType(List.class, paramClass);
        return JacksonUtil.tryParse(()->{
            return JacksonUtil.getObjectMapper().readValue(content,javaType);
        });



    }



}
